Indicating mechanism



Jan. 14, 1930. WARREN 1,743,741

INDI CATING MECHANI SM Filed Jan. 15, 1926 2 Sheets-Sheet 1 "1 I7 I6\nven-tor:

' Henry E. Warren,

Jan. 14, 1930.

H. E. WARREN INDICATING MECHANISM Filed Jan. 16 -1926 2 Sheets-Sheet 2Inventor: Henry E. Warren,

mounted in the sleeve 15, which in turn is rotatably mounted in thesleeve M, the latter sleeve being mounted in a suitable bearing in thesupporting irameworlt.v

Referring to Fig. 5, it is contemplated that a schedule and positionindicator 2'27 of the dis atcner eleve" A U ceivinp; de cs on n connected, is bv means of a friction of the elevator, T 1e transmittingdevice 31. .33

. shown, for example,

wheel 32 which bears against the cable is electrically connected withthe receiving devices by means oi the conductors 34. A suitable sourceof alternating current su ply 35 is connected to the field windin s othe transmitting and receiving devices y means of conductors 36. I

'llhe motors 18 of the indicating devices 27 and 30 are operated bymeans of asuitable source of alternating current having a frequencywhich can be varied so that the speed of the motors can be regulated.They are as being connected to a rotary converter 37 which is connectedto a direct current supply source 38. The field winding 39 of the rotaryconverter has an adjustable resistance 40 connected in circuit with itacross the supply source 38. By varying the amount of the resistance 40,for example, by means of a contact arm llco o crating; with suitabletaps, the speed of t e rotary converter can be regulated so as to varythe frequency supplied to the motors 18 in a well lrnown manner. Thusthe dis-.

patcher regulates the speed of the motors 18 so that the pointers l0 and11 indicate the desired speed of the elevator with respect to suitablygraduated scale 42 (Fig. It).

llt will be observed that two schedule indicator pointers to and 11 willbe in coincidence twice each revolution where they pass each other andin the shown in Figs, 14;, these pointers e .ch other their two verticalpositions when they are pointing upward or downward, A shield or mask &3is provided in front of the three pointers and this shield has anarcuate slot or opening it which is semicircular in extent andterminates on a vertical line passing through the axis of rotation ofthe pointers. In other words, the slot a l extends between the pointswhere the pointers 10 and 11 pass each other and is located in one side,shown as the left hand side, of the shield 43. It will thus be observedthat the pointers 10 and it come into view alternately as they pass bythe slot 44 and thus indicate alternately the v plurality 0 a,ves,ver

tvard with the elevator. The pointer 10 is arranged to move in acounterclockwise direction, and, therefore, moves a downward directionwhen in. vie r is provided wit.

arrow 45 which indicates this direction of movement, The pointer 11,which is driven in a clockwise direction, moves in an upward directionwhen in view and is likewise provided with an arrow 4:5 indicating thisdirection of movement.

The pointer 12 has a range 01'? movement of 138 corresponding with thetravel of the elevator and is arranged to be in view through theaperture 44. In the operation of the elevator the operator on the cabwatches the indicator 27 and controls the elevator so as to maintainthepointer 12 substantially in coincidence with that one of the schedulepointers which is in view. The indicator 30 shows the dispatcher hownear to schedule the elevator is running.

It will be observed that by means of this arrangement the oscillatorymovements of the shaft 23, in accordance with the upward and downwardmovements of the elevator, may be compared with the rotary motion of theshaft 21 under the control of .the dispatcher. For convenience the shaft'23 may be termed a position member and the shaft 21 may be termed aschedule member. Obviously the movements of the oscillating positionmemher and the rotating schedule member may be compared in various otherways. For example, the position member 23 may operate a pointers movingin opposite directions so as to change its oscillatory motion intoapparent rotary motion which may then be compared with a single pointerdriven by two hands 10 and 11 may be brought into view various otherWays than by the use of the mesh 13, for example, by illuminating eachland, as by a beam of light, while it passes over a predeterminedportion of the dial.

will be understood that suitable operat mechanism is provided for theelevator; for example, it may be driven by means of an electric motorwhich is geared to a hoisting" rum 43 around which the cable 33 iswound, 1 1e cable then passing around an idler wheel t9 and having itsend connected to a counterweight 50.

In order to make correct-ions for any sli page which may occur betweenthe cable and the driving wheel 32 or the transmitting device 31, meansare provided for synchronizing the transmitting device each trip of theelevator. A V shaped notch 5411s provided in the periphery of thefriction wheel 32 and a V shaped cam 51 is provided on a pivoted arm 52in a position to be opposite the notch '54- when the elevator reachesits uppermost position. Just before the elevator reaches this position,a knob 53 on the cable engages the free end of the lever 52 and forcesthe cam 51 into the notch. lhe engagement of the cam.

with the inclined sides of the notch causes the wheel 32 to slip withrespect to the cable when necessary and thus brings the wheel into apredetermined position with relation to the cable.

While I have described my invention as embodied in concrete form and asoperating in a specific manner in accordance with the provisions of thepatent statutes, it should be un derstood that I do not limit myinvention thereto, since various modifications" thereof will suggestthemselves to those skilled in the art without departing from the spiritof my invention, the scope of which is set forth in the annexed claims.v

What l claim as new and desire to secure by Letters Patent of the UnitedStates is:

l. A schedule and position indicating system for elevators and the like,comprising a pair of indicating members, means mounting said members forrotation'about a common axis, means for driving said members in oppositedirections independently of the movements of said elevator, so that saidmembers move alternately in a predetermined path over a predeterminedhalf revolution of their travel, a third indicating member mounted formovement in said path over said half revolution, and means for drivingsaid third member in accordance with the movements of the elevator.

2. A schedule indicator for elevators and the like, comprising a pair ofindicating members having predetermined common paths of movement, andmeans for moving said members in opposite directions alternately over aportion of said predetermined paths at speeds corresponding to thedesired upward and downward speeds of the elevator. whereby said membersindicate alternately the desired upward and downward movements of theelevator.

3. A schedule indicator for elevators and the like, comprising a pair ofindicating members on said elevator, means mounting said indicatingmembers for rotation about a common axis, and means for rotating saidmembars in opposite directions alternately over a predetermined portionof their travel'at equal s eeds corresponding to the desired speed 0 theelevator, whereby said members indicate respectively the desired upwardand downward movements of the elevator with respect to saidpredetermined portion of their travel.

4. A schedule indicator for elevators and the like, comprising separateindicating members, means mounting said indicating memher: on saidelevator in juxtaposition to each other for indicating the upward anddownward movements of the elevator respectively, visual shielding meansfor said members during a predetermined portion of their travel, andmeans for driving said members in opposite directions so that saidmembers move alternately over the remaining portion of the desired speedof the elevator, and means i for obscuring said indicating membersalternately during half of each revolution wherebysaid members move intoview alternately during the remaining half of each revolution toindicate the desired upward and downward movements of the elevator.

6. A. schedule indicator for elevators and the like, comprising a pairof indicating'members, means mounting said indicating members forrotation about a common pivot axis, means for driving said members inopposite directions at the same speed to indicate the desired movementsof the elevator, means for varying the speed of said driving means, anda shield for said members provided with an aperture extending betweenthe points where said members are coincident so that said members moveinto view alternately behind said aperture throughout a given halfrevolution oi their travel to indicate respectively the desired upwardand downward movements of the elevator.

7. An indicating device comprising a pair of indicating members, meansmounting said indicating members for rotation about a common axis, meansfor rotating said members in opposite directions, and means forobscuring said members alternately so that said members come into Viewalternately to simulate a single member having oscillatory motion.

8. An indicating device comprising a pair or indicating members, meansmounting said indicating members for rotation about a common axis, meansfor rotating said members at equal speeds in opposite directions wherebysaid members move into coincidence each half revolution, and means forobscuring said members over one half revolution whereby said membersmove into view alternately in the other half revolution to simulate asingle member having oscillatory motion.

9. A schedule indicating device comprising a pair of indicating hands,means mounting said indicating hands for rotation about a common axis, ashield for said hands provided with an aperture through which said e1 Imes /er.

hands reey be viewed throughout a half her, meens for driving scheduleinrevolution, and eens for rotating said dicetor members in oppositeQZTSC URS alter hands in o osite directions so as to move netelv overthe pa 1 non. mm-

s said aperture alternately to cetormeino l oosition single heed havingoscilietory end dire' v v I gj-M m posi ion ssid in dsehedn. c

one of said r d eievetor whereby on by said elevator beck accordancewith its upward end o i e schedule member,

schedule member invoter, e scale, indicator members cooperating withsei-d scele,

and dri connections between said indimembers and said position andschedule :iembers respectively whereby said indicator 1% members showthe actual and desired positions of the eievzitor.

12. A schedule and position indicator for elevators and the like,comprising e posi= 536 tion member, a driving connection between 2% saidmember and said elevator whereby said member is driven by said elevatorback end forth in accordance with the'upwerd and downward movementsthereof, a schedule member, means for driving said schedule 2m memberindependently of the elevator, indicator members, means mounting saidindicstor members in juxtaposition and driving connections between saidindicator mom so bers and said position and schedule members 345respectively whereby said indicator members move together when theelevator is following the desired schedule,

13. A position and scheduleindicator for 55 elevators and the like,comprising a position indicator member, a driving connection betweensaid position indicator member and said elevator whereby said indicatormember is driven in one or the other of two-directions to in accordancewith the movements of the ele- 4 vator, a pair of schedule indicatormembers for indicating the desired upward and downward movements of theelevator, means I mounting said schedule indicator members in i 55'uxtaposition to said position indicetormem- M}

